Monilia on apricot, peach or Cherry tree. What treatments to perform to cure the fungal disease caused by Monilia laxa. Useful tips from the agronomist.
Apricot, peach and cherry are three trees belonging to the Rosaceae family, of the genus Prunus. It is no coincidence that the fungus Monilia laxa can attack these fruit plants. The mushroom Monilia laxa, in fact, it can take root on all Drupaceae, that is fruit trees that belong to the Rosaceae family and that produce Drupes. The three plants mentioned (apricot, peach or cherry) are only the most representative specimens of the Drupaceae. Among the sensitive stone fruit we also remember the plum, the stone and the almond tree.
If you have problems with apricot monilia, the guide article dedicated to green apricot pruning may be useful.
Sclerotinia cinerea or gummy cherry tree
ThereMonilinia laxa it is also known as Sclerotinia cinerea or simply Monilia. Due to its propensity to attack certain plants, it is also known ascherry tree monilia, monilia del pesco or chewy cherry. It is a parasitic fungus that attacks branches, leaves, flowers and fruits, preferring the Drupaceous species.
If the infection is mainly concentrated on the fruit and the tree in question is onePomacea, most likely it will not be Sclerotinia cinerea but a close relative, Monilinia fructigena.
Monilinia fructigena mainly attacks the fruit of pome fruit such as apple, pear, quince, medlar and rowan. Generalizing, i treatmentsused for the control of both fungi of the genus Monilia, are the same but in this article we will focus on the Monilia that attacks the Drupaceae.
Infections of the monilia of the cherry tree (apricot or peach monilia) occur mainly when flowering coincides with a particularly humid and rainy period. In this context, favorable conditions are created for the proliferation of the fungus.
There monilia on apricot, peach or cherry manifests itself with the same symptoms. On the branches there are formations of branch cancers with the production of an abundant exudate. Observing the branches, in fact, you can see gummy formations produced by the metabolic activity of the parasitic fungus.
The leaves may appear with reddish spots on both edges. In the long run, mold forms on the leaves and desiccation. The mold is gray in color (gray mold or ashy mold, hence the nameSclerotinia cinerea).
The parasitic fungus can also attack flowers and fruits. Flowers show symptoms when they are well in bloom. They begin to darken and then dry out. The fruits are affected by circular conical pads of yellowish color.
Monilia: apricot, peach or cherry
THEtreatmentsto delete themonilia on apricot, peach or cherry are mainly summer. Treatments based on systemic fungicides are performed.
If the disease has affected multiple plants or is extremely overt, treatments may prove insufficient. For this reason, if you suspect themonilia on apricot, cherry or peach, it would be good to act with preventive treatments at the first symptoms.
Many agronomists, in case of overt disease, recommend the removal and disposal of the attached plants of the plant. This means, in the case of the Monilinia fructigena mushroom, the elimination of the fruits. In the case of Monilia on apricot, peach or cherry, unfortunately it is not enough to eliminate and remove the fruits. Monilia laxa disease also attacks the branches, a drastic pruning could be recommended even if it would halve the harvest.
Therebiological struggle, in fact, it takes place precisely through thepruning. They are eliminated:
- Dried twigs
- Branches with cankers or gummy formations
The branches, once cut, should be buried or burned (where possible).
For the prevention and treatment of monilinia lexa, various pesticides can be used. The treatments can be winter and spring. We only intervene in summer when the presence of the fungus is discovered late.
Monilia on apricot: treatments
Monilia from the cherry tree or monilia from the peach tree can be eliminated with fungicidal products. Whether the fungus occurs on apricot, cherry or peach, the treatments are the same as described above.
For details on the products to be used, the active ingredient tebuconazole-4.35 (not classified) was found to be effective. The recommended doses generally include a dilution of 35 ml of active ingredient per 10 liters of water, to be sprayed on the affected plant and other stone fruit at risk.
It is important to apply the plant protection product following the safety rules. Reading the label before use is essential! When to perform the treatments?
The first three treatments to eliminate cherry monilia (peach and apricot)
To contain the disease on the flowers, it is important to carry out a first treatment when the flowers open and a second treatment - if the first was insufficient - in full bloom. If the season is rather humid and rainy, a third treatment is carried out when the petals fall (withering).
Late-spring and summer treatments
When the infection is present on the fruits, to contain it, it is advisable to intervene a couple of weeks before harvesting. The treatment will then have to be repeated after seven days.
Cherry tree monilia is not the only disease that attacks stone fruit. For more info: cherry tree diseases.